Ice Ball Molds for Slow-melting Beverage Chillers - Set of 4 Molds Set of 4 Stackable Space-Saving Ice Molds Leak-Free, BPA-Free Plastic w/Silicon Cap Dishwasher Safe & Won't Tip in Freezer Each Mold Holds 5 Ounces, Measures 2 Produces Perfectly Spherical Ice Balls